Zeolite Heulandite Modified with N,N'-bis(3-Triethoxysilylpropyl)thiourea-Adsorption of Ni(II) and Cu(II) Ions: A Quantum Chemical Insight into the Mechanism.

ABSTRACT: A new sorption material (GS) was obtained by the modification of heulandite zeolite (G) with N,N'-bis-(3-triethoxysilylpropyl)thiocarbamide (S). The composition, structure, and surface morphology of the GS material were confirmed using elemental analysis, IR-, NMR-spectroscopy, X-ray diffraction, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), elemental mapping, and nitrogen adsorption/desorption (BET). The potential of GS as a sorbent for the removal of Cu(II) and Ni(II) ions from concentrated solutions was demonstrated. The nature of the adsorption of Cu(II) and Ni(II) ions was investigated using the Langmuir, Freundlich, and Dubinin-Radushkevich models. The adsorption value of Cu(II) and Ni(II) ions by the GS sorbent was found to be 1.7 and 2.1 times high

SUBMITTER: Filatova EG 

PROVIDER: S-EPMC12736353 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature